26. Non-Destructive Evaluation (NDE) of Ceramic Armor: Testing

  1. Jeffrey J. Swab
  1. Raymond Brennan1,
  2. Richard Haber2,
  3. Dale Niesz3 and
  4. James McCauley4

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291276.ch26

Advances in Ceramic Armor: A Collection of Papers Presented at the 29th International Conference on Advanced Ceramics and Composites, January 23-28, 2005, Cocoa Beach, Florida, Ceramic Engineering and Science Proceedings, Volume 26, Number 7

Advances in Ceramic Armor: A Collection of Papers Presented at the 29th International Conference on Advanced Ceramics and Composites, January 23-28, 2005, Cocoa Beach, Florida, Ceramic Engineering and Science Proceedings, Volume 26, Number 7

How to Cite

Brennan, R., Haber, R., Niesz, D. and McCauley, J. (2005) Non-Destructive Evaluation (NDE) of Ceramic Armor: Testing, in Advances in Ceramic Armor: A Collection of Papers Presented at the 29th International Conference on Advanced Ceramics and Composites, January 23-28, 2005, Cocoa Beach, Florida, Ceramic Engineering and Science Proceedings, Volume 26, Number 7 (ed J. J. Swab), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291276.ch26

Author Information

  1. 1

    Rutgers University 607 Taylor Road Piscataway, NJ 08854–8065

  2. 2

    Rutgers University 607 Taylor Road Piscataway, NJ 08854–8065

  3. 3

    Rutgers University 607 Taylor Road Piscataway, NJ 08854–8065

  4. 4

    US Army Research Laboratory Aberdeen Proving Ground, MD 21005–5066

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2005

ISBN Information

Print ISBN: 9781574982374

Online ISBN: 9780470291276

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Keywords:

  • nondestructive evaluation (NDE) techniques;
  • silicon carbide;
  • ultrasonic transducers;
  • shear waves;
  • elastic propaties

Summary

Nondestructive evaluation (NDE) techniques have been used to analyze ceramic armor materials such as silicon carbide (SiC). Research has been conducted using contact and water immersion 25–100 MHz longitudinal and shear wave ultrasonic transducers in pulse-echo configurations to analyze defects in the form of acoustic differences in these materials. Time-of-flight (TOF) measurements were collected from oscilloscope traces of voltage verse time, and the thickness of the samples (t) at each point was recorded. Longitudinal (cl) and shear wave velocities (ca) of the SiC samples were calculated using the equation, c= t/TOF. The velocities were used to calculate elastic properties of the material, including Young's modulus, shear modulus, and bulk modulus, which compared favorably to results reported in the literature. C-scan imaging was also utilized to map acoustic differences and identify locations of flaws and defects in the armor materials. This data, combined with ballistic testing, will provide crucial information about critical flaw sizes and populations in ceramic armor, serving as a major step for nondestructively gauging the success and failure of commercial armor plates.